fix(:lang): remove vestigial rainbow-delimiters-mode hooks

rainbow-delimiters was removed in 87b616e, but some of its activation
hooks were restored in 3b58741 and not removed when merged into
`master`.

Fix: #8483
Ref: 87b616e5d8
Amend: 3b58741522

modules/lang/csharp/config.el

@@ -1,7 +1,6 @@
 ;;; lang/csharp/config.el -*- lexical-binding: t; -*-
 
 (use-package! csharp-mode
-  :hook (csharp-mode . rainbow-delimiters-mode)
   :defer t
   :init
   (when (modulep! +tree-sitter)

modules/lang/dart/config.el

@@ -24,8 +24,9 @@
   (when (modulep! +lsp)
     (add-hook (intern (format "%s-local-vars-hook" mode)) #'lsp! 'append)))
 
+
 (use-package! dart-mode
-  :hook (dart-mode . rainbow-delimiters-mode)
+  :defer t
   :config
   (+dart-common-config 'dart-mode))
 

modules/lang/graphql/config.el

@@ -28,7 +28,6 @@
     '((t (:foreground "#E10098")))
     "Face for GraphQL icon."
     :group 'nerd-icons-faces)
-  (add-hook 'graphql-mode-hook #'rainbow-delimiters-mode)
   (+graphql-common-config 'graphql-mode))
 
 

modules/lang/php/config.el

@@ -65,7 +65,7 @@
 
 
 (use-package! php-mode
-  :hook (php-mode . rainbow-delimiters-mode)
+  :defer t
   :config
   (+php-common-config 'php-mode)
 

modules/lang/zig/config.el

@@ -32,7 +32,7 @@
 
 
 (use-package! zig-mode
-  :hook (zig-mode . rainbow-delimiters-mode)
+  :defer t
   :config
   (setq zig-format-on-save nil) ; rely on :editor format instead
   (+zig-common-config 'zig-mode))